KVM: PPC: Book3S: Stop PTE lookup on write errors
When a page lookup failed because we're not allowed to write to the page, we should not overwrite that value with another lookup on the second PTEG which will return "page not found". Instead, we should just tell the caller that we had a permission problem. This fixes Mac OS X guests looping endlessly in page lookup code for me. Signed-off-by: Alexander Graf <agraf@suse.de>
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@ -335,7 +335,7 @@ static int kvmppc_mmu_book3s_32_xlate(struct kvm_vcpu *vcpu, gva_t eaddr,
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if (r < 0)
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r = kvmppc_mmu_book3s_32_xlate_pte(vcpu, eaddr, pte,
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data, iswrite, true);
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if (r < 0)
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if (r == -ENOENT)
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r = kvmppc_mmu_book3s_32_xlate_pte(vcpu, eaddr, pte,
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data, iswrite, false);
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